2 drops of 10% ammonia solution in 2.5g of saltwater is a very weak solution. I could to the m1v1=m2v2 equation and figure out exactly how much it is...
From the article I read, the author suggested 5ml of ammonia per 20g of water once every 24 hours with a 0.10mol (10%) solution of ammonia. that's 1ml of water in four gallons of water. That would be .25mL for every 1g or .625mL for every 2.5g of water... one drop of liquid assuming 1.0gram/ml is roughly 0.05ml. Assuming that, I didn't add enough...
But, I see what you are saying. The foam at the top of the tank is getting thicker today. I think the bacteria is building up nicely since the foam has changed. That's just an observation though, I have no data to back that statement up.
I need to go ahead and get my light set up in the back of the tank so that I can get the scrubber growing. At the end of this week I will take a water specimen to the fish store and get it tested.
The coralline algae looks pretty cool under the lighting conditions. I'm happy so far with the look of the tank. My wife even said "its cute."
As far as corals I want to keep for the time being - I am going with very, very easy going corals - zoanthids, pulsing xenia, mushrooms, ricordea, nepthia, Kenya tree... basically anything I can feed and watch grow and frag easily. I do want a few sexy shrimp or possibly one small cleaner shrimp - but that's about it... something easy and hassle free. I'm not even mixing my own saltwater - buying a gallon from the fish store once a week and topping off the tank with a gallon jug of freshwater that might last me a month. lol
I really am liking these nano tanks. So much less hassle and so much less money spent filling them with corals.
My maintenance plan is simple... observe 5 days a week. Feed the tank phyto/etc. Saturday morning then do a 1g water change Saturday afternoon. Sunday morning is scrubber cleaning. Simple... effective...